Incased electrical apparatus



July' 8 1924- w. s. MOODY INCASED ELECTRICAL APPARATUS Filed Oct. 26. 1920 w d. n o o o mMMt m/%M 2 y b Patented 8, p p I UNITED STATESPATNT OFFCE.'

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. 'ERIO COIPANY, A COBPORATION OF NEWYORK.

` menenn ELECTBICL ArrmrUs.

- Application'fled oct beae, mo. Serial ro.. nana.

To all whom it may cmwem."

Be it known that I', WALTER SL Moonx, a' citizen of the United States, residng at Pittfield, county of Berkshjre, State of Massachusetts, have invented certain new and useful Improvements .in Incased Electrical Apparatus, of which the following s a specification.

My invention relates to incased electrcal apparatus adapted to bevsubmerged in a cooling medium, .such as oil; more partcu- I larly my invention relates to apparatus of this typewhich is provided with external radiators for aiding in the rapid dissipation of heat from the cooling medium.

In shipping electrical apparatus of this type,"it is generally desirable to have the external radiators detached during transit. It is, however, desirable at the same time that the apparatus should be shipped filled with oil, or with whatever cooling medium is employed, in order, to avoid the shipment of Separate containers with the oil therein and thereby reduce transportation expenses. Furthermore the presence of the normal cooling medium in the casing of the electrical apparatus during transit excludes' vapors and the like which might attack and have a deleterious action on the apparatus within while on the road. Prior to my invention, if it was desred to ship such electrical apparatus filled with oil, it was generally necessary to provide special closures for the openings where the radiators are to be attached in order to prevent the oil from escaping during transit, and to remove the oil at the place of installation before removing the special closures to attach the external radiators for the final set-up of the appartus.

The object of my invention is therefore to provide means whereby the incased electrical apparatus may be shipped filled with oil without the radiators being attached, the same to be attached at the place of installation without -first emptying the casing of its oil.

For a more 'complete understanding of the nature and' object of this invention, referenoe should be had to the following de tailed description taken in connection with the accompanying drawing in which:

Fig. 1 is a view mainly n vertical section of an incased transformer provided with a detachable external radiatorin accordance securely fitted into the facing of some 23 are removed exce t with my invention. details in the radiator ployed.-

Referring now to the drawing, '10 denotes a casing made preferably of heavy sheet metal, such as boiler plate, having a 11 and cover 12; the transformer housed thereby being shown at 13. -The casing 10 is adapted to have external radiators, such as are shown at 14, attached thereto by suitble means, such as theflanges and couplin ndicatedrespectively at 15 and 16; which radiators are to increase the heat dissipating and radiating capacity of the casing.- The radator 14, which is normally attached, is shown in a detached position, in order more clearly to indicate the nature of the means which I have devised for enabling the casing with its enclosed apparatus to be shipped filled with oil; the oil in the cas- 111% is here indicated at 17.

he flanges 15 to which the radiators 14 are to be attached are Figs. 2 and 3 show connecting means emwelded or otherwise as indicated in F igs. 2 and 3. The orifices n the wall of the casing thus provided by the fianges are closed by suitable plugs or stoppers 20 which are fitted into such openngs from the interior 'of the casing.

In order to hold securely the stop rs 20 n place after having been inserted are each provided with a central threaded 'recess adapted to receive the threaded end of a bolt 21, as shown in Fig. 2. The head 22 of the bolt 21 is adapted to engage when drawn up with a perforated bar 23 placed across the flange 15' as indicated. In this manner the plugs 20 securely close the fla orfices and may be further provided with a yieldable material such as rubber, here ndicated at 25,*-over that porton which is adapted to engage with the perphery of the orifices. This yielding matheywall of the casing teral serves as a packing to make a fluid a tight joint when the bolt 21 is drawn'up' to secure the plug in place.

The plugs 20 are inserted in place from the interior of the casing in order that the radiator `14 may be attached without first removing the plugs 20. The bars 23 only need be removed, the static pressure of the oil in the casing bein suflE'cient to hold the plugs in place at a times after the bars when displacing forces are directly app 'ed.

' casing an the casing is rea -In order to remove the plugs 20 after the radiators are attached, I provide cables, such as are indicated at 26 reaching to the top of the casin suitable anchoring devices 27 for the ca les being provided on the casin above the oil level to support their upper en In order to be able to manipulate the cables 26, the cover 12 is rovided with a manhole 28 suitably locate preferabl adjacent the anchoring device. The cab es 26 as shown are preferably secured to the plugs 'at points below their centers in order that an upward pull on a cable may produce a torque tending to displace the plug with a rollng movement from its orifice as indicted in Fig. 3; which movement gre-atly facilitates the ready displacement of the plugs when desired.

Incased electrical apparatus accordn to my invention, preparatory plugs 20 secured n the flage orifices, the same bein inserted from t e interier of bein made fast by bolts and bars as indicate in Fig. 2. The cables 26 having been proerly arranged, anchored,

y to be-filled with oilto the proper level and shipped without the *up with t radiators being attached.

At the place of installation the apparatus thus ship d is ready to be immediately set e oil in place. After having been set up and when it is desired to attach the external radiators, the bolts and bars 21 and 23 are first removed and the radiators are then secured in place. To let the oil (enmoved b drawing out the cables 26. If these cab es are sutably marked, they may to shipment as s be drawn out in apredetermined order; the

air from the to openings when their plugs are removed. V ese 'lugs and their-cables are adapted to be use over and over again, and it is seen that they do not occupy any useful space.

Having now described what is at present the best means known to me for carrying out an embodiment of my invention, I would have it understood that such means' are merely illustrative and that I do not mean to be limited thereby to'the exact details shown nor restricted in the choice of recognized equivalents exce t as definedin my claims hereunto appen ed.

What I claim as new and desire to secure by Letters Patent of the United States,-

A casing for oil submerged electrical ap paratus having detachable external radiators, said casin being provided with plugs inserted'from t e interier of the casing into the orifices in the casing wall through which the radiators connect when attached thereto, exterior devices for sec said plugs in place against the action o direct dsplacing forces when the radiators are detached, and means disposed' within the casing for opening said orifices by withdrawing said plugs* after'said exterior devices are removed and the radiators areattached, said means being arranged to be manipulated from inside the casing. ter the radiators the plugs 20 are then re- In witnesswhereofl-I have hereunto set my hand this 23rd da of October', 1920. i W TER S. MOODY 

